With excitatory light, fluorescence of viable cells were bright green in 3 hours,while the f1uorescence of live cells were attenuated to such an extent that light green shadows were showed up to 5 hours after chicks were decapitated.

• 鸡断头3h内，活性良好的细胞着非常明亮的绿色荧光，到5h，活性细胞呈现不清晰的绿影。